3 resultados para 1884

em Aquatic Commons


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Publicación de la lista de materiales depositados en la Colección de la Sección Zoológica del Museo de La Plata y sus localidades. (PDF tiene 13 paginas.)

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At one time Maryland produced more oysters annually than the rest of the world combined, including all species used for food. This document shows the decline in production to one sixth of the 1884 yield in 1929-1930. Observations over the course of the last decade have indicated two major factors responsible for the decline in oyster production. Reduction of brood stock stands first, while failing to provide clutch (shells) for the setting purposes has been a close second. (PDF contains 29 pages)